hg: build-infra/jdk9: * BOOT_RMIC is not needed anymore after SA cleanup.

[magnus.ihse.bursie at oracle.com]

Changeset: 974095374d9f
Author:    ihse
Date:      2015-12-11 22:14 +0100
URL:       http://hg.openjdk.java.net/build-infra/jdk9/rev/974095374d9f

* BOOT_RMIC is not needed anymore after SA cleanup.
* Use better USERNAME code from Verona.

! common/autoconf/boot-jdk.m4
! common/autoconf/generated-configure.sh
! common/autoconf/hotspot.m4
! common/autoconf/spec.gmk.in